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The Single UNIX &reg; Specification, Version 2<br>
Copyright &copy; 1997 The Open Group

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<h4><a name = "tag_000_008_786">&nbsp;</a>NAME</h4><blockquote>
sinh - hyperbolic sine function
</blockquote><h4><a name = "tag_000_008_787">&nbsp;</a>SYNOPSIS</h4><blockquote>
<pre><code>

#include &lt;<a href="math.h.html">math.h</a>&gt;

double sinh(double <i>x</i>);
</code>
</pre>
</blockquote><h4><a name = "tag_000_008_788">&nbsp;</a>DESCRIPTION</h4><blockquote>
The
<i>sinh()</i>
function computes the hyperbolic sine of
<i>x</i>.
<p>
An application wishing to check for error situations should set
<i>errno</i>
to 0 before calling
<i>sinh()</i>.
If
<i>errno</i>
is non-zero on return, or the return value is NaN,
an error has occurred.
</blockquote><h4><a name = "tag_000_008_789">&nbsp;</a>RETURN VALUE</h4><blockquote>
Upon successful completion,
<i>sinh()</i>
returns the hyperbolic sine of
<i>x</i>.
<p>
If the result would cause an overflow, &plusmn;HUGE_VAL is
returned and
<i>errno</i>
is set to [ERANGE].
<p>
If the result would cause underflow, 0.0 is returned and
<i>errno</i>
may be set to [ERANGE].
<p>
If
<i>x</i>
is NaN, NaN is returned
and
<i>errno</i>
may be set to [EDOM].
</blockquote><h4><a name = "tag_000_008_790">&nbsp;</a>ERRORS</h4><blockquote>
The
<i>sinh()</i>
function will fail if:
<dl compact>

<dt>[ERANGE]<dd>
The result would cause overflow.

</dl>
<p>
The
<i>sinh()</i>
function may fail if:
<dl compact>

<dt>[EDOM]<dd>
The value of
<i>x</i>
is NaN.

<dt>[ERANGE]<dd>
The result would cause underflow.

</dl>
<p>
No other errors will occur.
</blockquote><h4><a name = "tag_000_008_791">&nbsp;</a>EXAMPLES</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_008_792">&nbsp;</a>APPLICATION USAGE</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_008_793">&nbsp;</a>FUTURE DIRECTIONS</h4><blockquote>
None.
</blockquote><h4><a name = "tag_000_008_794">&nbsp;</a>SEE ALSO</h4><blockquote>
<i><a href="asinh.html">asinh()</a></i>,
<i><a href="cosh.html">cosh()</a></i>,
<i><a href="isnan.html">isnan()</a></i>,
<i><a href="tanh.html">tanh()</a></i>,
<i><a href="math.h.html">&lt;math.h&gt;</a></i>.
</blockquote><h4>DERIVATION</h4><blockquote>
Derived from Issue 1 of the SVID.
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UNIX &reg; is a registered Trademark of The Open Group.<br>
Copyright &copy; 1997 The Open Group
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